First out of all of Rhyperior's abilities(Lightningrod, Solid Rock & Reckless) Solid Rock is probably it's best one giving it more time on the battle field since he can better take hits. He literally has no move that can work with Reckless, does he?

Nature: Adamant or even Brave ( it won't matter if it decreases your speed since
no matter what you do you won't be able to make Rhyperior faster; also the same goes for Special defense)

Moves: Earthquake (is a must, I won't even bother to explain why)
Stone Edge ( is probably his best rock type move since Rock Wrecker needs turn to recharge)
Megahorn (a powerful move that can hit pretty much anything for a lot of damage)
For the last slot you can either go for Hammer Arm ( like me) since again the drawback of having your speed lowered
isn't something you'll cry over or
you can choose one of the Elemental punches ( though they are very weak ).
Another interesting moveset one could try is by exchanging some moves with Stealth Rock and Dragon Tail, affectedly destroying
most of the entire team.

Rhyperior is... Okay, rock/ground is a horrible typing with so many week messes but also spells STAB in EdgeQuake. Rhyperior's attack is nothing to scoff at, sitting at a 140 base attack. It's just... Solid Rock is a great ability that weakens super effective moves, but it's special defense can be horrible. Life Orb is for the extra firepower but Focus Sash is for safety purposes. Basically, hit hard and faint. It's speed is horrible as well. Anyways, Fire Punch removes three weaknesses and practically gives coverage. EdgeQuake is a dangerous combo, since both are boosted by STAB. The last slot goes to ThunderPunch for coverage or Aqua Tail for coverage against other ground types.

Ah, Rhyperior, one of my favorite Pokemon.
Abilities:
Lightningrod: Not that great of an ability considering that Rhyperior is a physical attacker and is a ground. It's only good in Double Battles and even then there are better Pokemon to do it.
Solid Rock: Probably Rhyperiors best ability, making any super-effective damage weaker, but considering that most of Rhyperior's weaknesses are Special-based, it doesn't help sometimes, but it is probably his best ability.
Reckless: Boosting only moves like Take Down, it's not the better ability

Set:
Red Rover, Red Rover, Run them right over.
- Stone Edge
- Earthquake
- Hammer Arm / Dragon Tail
- Rock Slide
Item: Life Orb
Ability: Solid Rock
EVs: 252 Attack / 252 SDef / 4 HP
Nature: Adamant
Unfortunately, Rhyperior's speed is its downfall. If it was faster it would be a much stronger Pokemon. But what it does have is high Attack and alot of strong moves that benefit from it. Stone Edge, Earthquake, Hammer Arm. I would probably run Hammer Arm over Dragon Tail, but Dragon Tail might be better depending on the kind of Rhyperior you want to run. Stone Edge has high-critical hits. Earthquake hits so many Pokemon. Hammer Arm is strong, and it lowers Rhyperior's speed, but that doesn't matter considering that his speed is already pathetically low. Dragon Tail is there if you don't want to run Hammer Arm, and it can switch out something that could take your Rhyperior out, but you would have to predict well considering his speed. Finally we have Rock Slide, a strong move with decent accuracy. STAB will help boost this up.

The first move is your choice. SE is reliable-ish, RW has a ridonkeylous amount of power, and Rock Blast breaks subs while being much weaker. Earthquake is Earthquake. Megahorn catches some coverage on bulky Psychics and such, and the last move is for more coverage. Fire Punch catches Bronzong and grass-types that are neutral to Megahorn (Roserade), while Aqua Tail also does stuff.

You could also try a Swords Dance set, but if the opponent hasn't switched in with a counter by then, you shouldn't be playing him. Rhyperior is best used in hit-and-run fashion, since so many things can hurt him. Solid Rock really only helps with physical Fighting moves and Earthquake - hitting him with a special move, especially a Water or Grass one, will most likely OHKO him.

Rhyperior makes a great TR sweeper abusing STAB Earthquake and Stone Edge. It is already slow as crap.
With a Brave nature and 0 spd Iv's he hits a speed of 76. With his STABs he has fantastic coverage and with Solid Rock and a base 115/130 defence, he can take a Bullet Punch/Mach Punch or two.

This set should be used in TR. Earthquake is an awesome move, Stone Edge is also STAB. However, Rock Blast can be used to break through turn wasting substitutes. Megahorn is a strong move, covering grass types. Stealth Rock is an awesome move, but Rhyperior probably wont get to use it. Substitute can be used on a switch in, then you can hit the counter heavily when they break your sub. Thunderpunch can also be used to hit Bulky waters twice - once on the switch, once on their attacking turn. LO to grant power. Solid rock diminishes fighting and ground attacks, as well as maybe a weak Waterfall and a... Razor Leaf? Nothing on the special side probably. Maybe Earth Power? Sandstorm also helps buff Rhyperior. You could also use Hammer Arm to become "quicker"

Ability CompendiumLightningrod: Electric-type moves are drawn to this Pokémon. Electric-type moves will do no damage and the Pokémon's SP ATK is raised one stage .
First things first, this ability is only useful in Doubles/Triples and if one (or both) of your partners is weak to Electric-type moves.
Second, Rhyperior's Sp Atk sucks. Finally, this ability sucks in Singles since Rhyperior is ALREADY immune to Electric-type moves.Solid Rock: Damage by super-effective moves is reduced by 25%.
Rhyperior's best ability, nough said. Reducing damage done to super-effective moves can save your live, though Rhyperior will die against an Absorb or a Bubble anyway...Reckless: The power of moves that have recoil damage is increased by 20%.
It only boosts Rhyperior's Take Down and Double-edge, but you aren't going to use those anyway...

Pros:
One immunity to Electric-type moves (though many Electric-type Pokémon usually carry an Ice-type move).
Five resistances to Fire, Flying, Normal, Poison and Rock (only two of them are pretty common).
Good HP (115) and massive Attack (140) and Defense (130).
Trick Room is a massive help for Rhyperior.
Immune to Sandstorm and resistant to Stealth Rock.
Sunny Day helps him against Water-type moves (though Solarbeam will be VERY painful).

Cons:
Two 4x weaknesses to Grass and Water.
Four 2x weaknesse to Fight, Ground, Ice and Steel (three of them are super common offensive types).
Low Sp Def (55) and low Speed (40 means Rhyperior is SO ZETTA SLOW), though the Speed problem is easily solved by Trick Room.
Rain Dance will be a pain in Rhyperior's ***.
Grass Knot and Low Kick will kill Rhyperior thanks to its massive body.

Drill, drill, drill your horn, gently down the hole...@Iron Ball
Ability: Solid Rock
Nature: Brave
EVs: 252 Atk, the rest shoul be invested in HP, Def and Sp Def (more on the last stat), NO Speed EVs.
Earthquake/Drill Run
Stone Edge/Rock Slide/Rock Blast (NOT Rock Wrecker because is a 2-turn Hyper Beam like move which makes Rhyperior defenseless)
Hammer Arm
Megahorn
Before I explain this set, you should (and MUST) have a Trick Room supporter.
About your Ground STAB move, Earthquake is a more solid option than Drill Run, but if you like critical hits, you can go with Drill Run.
About your Rock STAB move, Stone Edge hits hard, but has low accuracy and PP, while Rock Slide is a more reliable option with more PP and slightly more accuracy (forget the side effect unless you have Trick Room) and Rock Blast is your Substitute breaker.
Hammer Arm while covering Ice and Steel-types, increases your Speed while Trick Room is in play.
Finally, Megahorn covers Grass-types.
Iron Ball adds some extra Speed with Trick Room in play

Hp:16, Atk: 240, Spd252
jolly/ adamant
well it will work against slower pokemon just to give you that extra edge-quake (teehee) though it won't be sweeping through entire teams, it will put a dent in all slower pokemon.

current Champion of Kalos (just like pretty much everyone else here)

Proud writer for: http://expsharepodcast.com/
--> check out the EXP.Share Rivalry Challenge to see a way to compete against one of your friends in Omega Ruby and Alpha Sapphire

Rhyperioris a great Pokemon for power, but Base 55 Sp.Def and 2 quad-weaknesses make it less viable in long-term fights. Even with Solid Rock giving +25% Resistance to Weaknesses and Sandstorm giving +50% Sp.Def to Rock Types, you need to hit hard enough to 1-shot your opponent and survive long enough to actually get the hit in. Even with maxed out, Sandstorm boosted Sp.Def, you've got an effective total Sp.Def of 343 with a Sp.Def-Up Nature or 313 with a Sp.Def-Neutral Nature. To put things in perspective for Sp.Def, Base 107 (Cradily & Appliance-Rotom) has a maximum of 344, Base 106 (Heatran) has a maximum of 342, Base 95 (too many to list) has a maximum of 317, and Base 90 (too many again) has a maximum of 306.

However, doing this will detract a lot of EVs from a more useful Stat (HP or Attack):
-If you do decide to pour EVs into Sp.Def, remember that you only need 132 HP EVs to hit the magic 404 Max HP for Substitutes. Then again, why would you not go whole hog for 434?
-Attack ties with Conkeldurr, non-Zen Mode Darmanitan, and Archeops above 50% HP, but putting only 4 EVs into Rhyperior with an Attack-Neutral Nature gives it an effectively-maxed Attack-Up Nature Base 95 or a total Attack of 317. Even then, why would you not go whole hog for 379/416 (Attack-Neutral/Up)?
-With only 4 Sp.Def EVs, you get 147/161 Sp.Def (Sp.Def-Neutral/Up), which boosts to 220/241 (respectively). That's between maximum possible Bases 60 (240) and 61 (243) at best. During a Sandstorm, a maxed-out Base 100 STAB Surf would deal a minimum of 417 Damage and a maxed-out Base 70 STAB Grass Knot would deal a minimum of 423 Damage to a Rhyperior with 4 Sp.Def EVs. Note that I said minimum.

If you have at least 271 total Sp.Atk and Grass STAB, Grass Knot is always a 1KO on a Rhyperior with less than 8 Sp.Def EVs. To put things into perspective, Torterra's maximum possible Sp.Atk is 273 (Base 75). Without STAB, you would need at least 405 total Sp.Atk (the maximum possible for Base 135) for that 1KO Grass Knot.

The moment I first saw this thing, I promised to never evolve my Rhydon.
Why did Rhydon's evolution have to be so ugly? Rhydon has a sweet design. Rhyperior looks like one of the Big Balls that you see on Wipeout with a stupid excuse for a head super-glued to the top. I also pictured a Snorlax with a lot of rocks and a tail. Rhydon's future royally sucks.
With my passionate hatred of Rhyperior's aesthetics aside, Rhyperior offers solid (albeit not excellent) competitive ability. Its stats are heavily unbalanced, featuring sky-high HP, attack, and defense while special attack, special defense, and speed are pathetically low. Rhyperior's type is powerful offensively, but suffers defensively. Defensively, Rhydon offers competition to the master of ugly thanks to the new Eviolite item.
Lets look at abilities. Rhyperior has Lightningrod, Solid Rock, and Reckless. Lightningrod is useless. Reckless doesn't offer much. Solid Rock is very nice. Movepool? Lots of options for offense.
Move set time!

I'm starting with something non-standard. This set is all about Trick Room abuse. STAB comes from the EdgeQuake combo with Megahorn for coverage. Curse makes Trick Room abuse awesome. If accuracy scares you, Rock Slide can be used over Stone Edge because Captain Ugly has plenty of attack to compensate for the power loss.

I'd just like to take this moment to inform people that Eviolite Rhydon in sand is incredibly bulkier than it sounds...and it has plenty of attacking prowess too...that said, trick room and indefinite sand are like peanut butter and jelly in rhydon's sandwich

Rhyperior is the perfect example of something heavily unbalanced. It's first three stats are monstrous: 115 HP / 140 Attack / 130 Defense are among the highest non-Uber stats in the game. However, it's other three stats are...not so monstrous. While Special Attack is out of the question, its abysmal Special Defense and Speed really hinder it. Its typing also doesn't help it: it gives Rhyperior a double weakness to Water- and Grass-type moves, move of which are special attacks. But that's enough of Rhyperior's crippling side. While it's unbalanced stats hinder it, they can also force out certain Pokemon easily. It's defense also allows it to take some of the strongest super-effective physical attacks, even including Darmanitan's Superpower. It's typing is great offensively, giving it STAB on EdgeQuake. It also has the movepool to abuse its gargantuan attack, including Megahorn, Ice Punch, Avalanche, Aqua Tail, and Hammer Arm. If you play Rhyperior to its advantages, it will give stall teams headaches, and will punch gaping holes in the opposing team.

AbilitiesLightningrod: 1. Rhyperior has a terrible special attack stat. 2. Rhyperior's Ground typing cancels out the boost. 3. This is useless in singles anyway. Could be used in doubles if you team it with Gyarados though.Solid Rock: This is the ability you should stick to. It weakens super-effective attacks. This compensates for its double weaknesses to Water- and Grass-type moves.Reckless: A good ability, but wasted on Rhyperior. The only move noteworthy move that gets boosted is Double-Edge, which is usually not worth using on any set.

This set capitalizes on Rhyperior's massive attack and defense, and its tendency to force switches. Earthquake and Stone Edge are the main STABs, and both hit like a truck thank to Rhyperior's attack. Rock Blast can be used over Stone Edge to break Substitutes, and still hits quite hard despite the inconsistent damage. Megahorn is mostly to hit switch-ins such as Shaymin, but can also be used to destroy Slowbro below 50%. Stealth Rock is used is use in the last slot to use when the opponent switches out. If your team already has a Stealth Rock user, Substitute is recommended, so you can possibly KO the switch-in. 48 EVs in Special Defense allow Rhyperior to survive some weaker Special Attacks.

Rock Polish can fix Rhyperior's speed up a bit. After a boost, it is only outrun by Crobat and common Choice Scarf users. The coverage move are the same as the last sets.

Other Options
Hammer Arm can OHKO Air Balloon Bisharp, but Bisharp doesn't carry it too often in UU. In the same vein, Fire Punch can also hit it along with Bronzong, but Rhyperior has a hard time finding a moveslot for these moves. Avalanche may sound tempting over Ice Punch, but since most opponents will switch to the appropriate counter when they see Rhyperior, it will often deal only 60 BP, making Ice Punch the better option. Aqua Tail hits opposing Rhyperior, but not much else. Swords Dance can be threatening, but requires a lot of team support since it is so slow.

Counters
248 HP / 244 Def Regenerator Slowbro is the best. It is only 2HKO'd by Megahorn, and even then it can just switch out to regain its health, while Surf will end Rhyperior's rampage. Hitmontop can easily stop Rhyperior if it carries Stealth Rock. Choice Scarf Heracross can easily counter the Rock Polish set as well.

Rhyperior... I've never really considered it a threat seeing how its Sp. Def is basically non-existent and my team is generally packed with special attackers. But its 140 Atk is quite attractive, even though the 40 Spd is quite repulsive.

Abilities:
Lightningrod: switch into an Electric attack, power up your Sp. Atk for... absolutely no reason. Unless... you have a Rhyperior made for Sp. Atk. A good joke Pokemon, and it... uh... might catch people off guard?
Solid Rock: no need to explain. Take it!
Reckless: x1.2 in power to recoil moves that Rhyperior doesn't really have... Now, if Rhyperior had Head Smash, that'd be different. But alas...

Stone Edge is the secondary STAB (for some reason, Rhyperior is Ground/Rock), and will probably miss 3 times out of 5 uses. Earthquake is the primary STAB that basically kills anything that touches the ground and doesn't resist. Megahorn blasts the Grass types that does resist Earthquake, assuming the Rhyperior somehow outruns it. Fire Punch hits the floating Steel types that resist everything else. Skarmory, for instance.

A Rhyperior that'll actually outrun stuff after a single turn. Rock Polish first, then kill away. Focus Band if you're lucky, Focus Sash otherwise. Personally, I've never seen Focus Band being used by my Pokemon, but I've seen it trigger twice in a row in the Battle Tower... If I were to use this set, Rhyperior would survive/barely survive the first Sp. Atk hit, use Rock Polish, use Stone Edge, miss, and then be immediately KOed. Again, use this set if you feel lucky.

Rhyperior has decent speed after a Rock Polish, outspeed base 100s and almost all non-scarfed Pokemon. Edgequake and the last moves depends on what you want to hit harder. Megahorn hits a lot more neutrally. Fire Punch hits Ferrothorns mostly and Ice Punch is for Breloom, Virizion and Gliscor

You Don't Say? I had no idea that a Choice Band Adamant Victini with maximum attack EVs and IVs that was baton passed +6 in attack and Skill Swapped Pure Power OHKO's Hasty Dry Skin Lvl 1 Paras with no defense EVs or IVs and -6 in defense under sun with a critical hit V-Create.​